How many watt-hours represent 65 W used for 18 h?
A. 11.7 Wh
B. 1,170 Wh
C. 11,700 Wh
D. 117,000 Wh
Answer: Option B
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Watthours = power consumed * time used
= 65 * 18
= 1170 wh
Solution:
Power = 65 Watts.
Time of period = 18 hours.
Wh = Power*Time.
Wh = 65*18 = 1170Wh.